🌿 ✨ [Scheduled] Update API Spec (#74)

* fix(fern/apis/api/openapi.json): update Analytics and Logs endpoints

This commit updates the Analytics and Logs endpoints in the OpenAPI specification for the Fern API. Specifically, it changes the Analytics endpoint from a POST to a GET request, renames the operationId and summary, and removes the "201" response code. For the Logs endpoint, the summary is updated to use a verb, as per the specification standards.

* feat: Add InflectionAI and XAI model options to openapi.json

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Co-authored-by: fern-api[bot] <115122769+fern-api[bot]@users.noreply.github.com>

Author: fern-api[bot]